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LED lamp with a heat sink

a technology of led lamps and heat sinks, which is applied in the field of led lamps, can solve the problems of limited heat dissipation area of enclosures, reduced heat dissipation capacity, and led to overheating, and achieves the effects of sufficient heat dissipation to the ambient air, large heat dissipation area, and small siz

Inactive Publication Date: 2010-03-02
FU ZHUN PRECISION IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The LED lamp described in this patent has a small size and high efficiency of dissipating heat. It includes a post, a heat sink with fins, an LED module, a holder, and a lens. The heat sink is designed to maximize the area of contact between the fins and the post, allowing for effective heat conduction. The LED module is securely mounted on the post using the holder, and the lens covers the holder to protect the LEDs. Overall, this LED lamp is ideal for use in a variety of applications where small size and efficient heat dissipation are important.

Problems solved by technology

However, in order to achieve a compact design and facilitate a transportation and handling of the LED lamp, the LED lamp is made having a small size, whereby the enclosure also has a small size, which leads to a limited heat dissipating area of the enclosure.
The limited heat dissipating area makes the enclosure have a lower heat dissipating capability and may cause the LEDs to overheat, whereby the LEDs will operate unstably or even fail.

Method used

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Examples

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Embodiment Construction

[0015]Referring to FIGS. 1 and 2, an LED lamp in accordance with a preferred embodiment of the present invention comprises a post 10, a heat sink 20 mounted around the post 10, an LED module 30 resting on the post 10, a holder 40 fixed on the LED module 30, and a lens 50 retained on the heat sink 20 and covering the holder 40.

[0016]The post 10 has a solid, cylindrical configuration and is made of metal having good heat conduction, such as copper, aluminum, or an alloy thereof. Alternatively, the post 10 can also be made hollow with a kind of coolant (not shown) received therein, for achieving a better heat dissipation. The post 10 forms a pair of symmetrical strips 12 on a top face (not labeled) thereof, wherein each of the pair of strips 12 is arc-shaped and curved outwardly, with an outer rim coincidental with a part of a periphery of the top face of the post 10. A gap (not labeled) is defined between two neighboring ends of the pair of strips 12. A pair of holes 14 are defined at...

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Abstract

An LED lamp includes a post (10), a heat sink (20) enclosing the post, an LED module (30) mounted on the post, a holder (40) secured on the LED module, and a lens (50) covering the holder. The heat sink is formed by a plurality of separated fins assembled together. Each fin comprises an outer portion (22) and an inner portion (24). An inner edge of the outer portion abuts interferingly against a periphery of the post, and a bottom of the inner portion contacts a top surface of the post. Heat generated by the LED module is conducted through the post to the plurality of fins, which dissipate the heat to the ambient air.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a light emitting diode (LED) lamp, and more particularly to an LED lamp incorporating a heat sink for increasing a heat dissipation thereof.[0003]2. Description of Related Art[0004]As an energy-efficient light, an LED lamp has a trend of substituting for the fluorescent lamp for an indoor lighting purpose; in order to increase the overall lighting brightness, a plurality of LEDs are often incorporated into a signal lamp, in which how to efficiently dissipate heat generated by the plurality of LEDs becomes a challenge.[0005]Conventionally, an LED lamp comprises a cylindrical enclosure and a plurality of LEDs mounted on the enclosure. The plurality of LEDs may be arranged in a plurality of lines along a height direction of the enclosure and around lateral sides of the enclosure, or just radially mounted on a top face of the enclosure. When the plurality of LEDs are activated to lighten, he...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F21V29/00
CPCF21K9/00F21V29/004F21V29/773F21V29/74F21Y2101/02Y10S362/80H01L2924/0002H01L2924/00F21V29/89F21Y2115/10F21V29/75
Inventor LIU, JUNCHEN, YONG-DONGWUNG, SHIH-HSUN
Owner FU ZHUN PRECISION IND SHENZHEN
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